0PUS3KZ
Supplement Thumb Phalanx, Left to No Qualifier with Nonautologous Tissue Substitute, Percutaneous Approach
Procedural Specifications
| Clinical Axis | Detail Definition |
|---|---|
| Section | 0 Medical and Surgical |
| Body System | P Upper Bones |
| Operation | U Supplement |
| Body Part | S Thumb Phalanx, Left |
| Approach | 3 Percutaneous |
| Device | K Nonautologous Tissue Substitute |
| Qualifier | Z No Qualifier |
Operation Definition
Putting in or on biological or synthetic material that physically reinforces and/or augments the function of a portion of a body part
Procedure Overview
Supplement procedures add biological or synthetic material to reinforce or augment a bone of the skull, face, thorax, or upper limb that remains anatomically in place, rather than replacing or repairing damaged tissue. Common examples include bone grafting to reinforce a weakened area of the skull, or augmenting a thin area of the sternum or scapula with mesh or cement to add structural strength.
This approach is chosen when the native bone is largely intact and functional but needs extra support, often to prevent future fracture, to build up bone stock before another procedure, or to strengthen a surgical repair site.
Anatomy & Axis Detail
Thumb Phalanx, Left
Supplementation of the left thumb phalanx is generally performed to fill a segmental or cavitary bone defect, whether from a crush injury, an infected nonunion, or curettage of a lesion such as an enchondroma, which are relatively common in the small tubular bones of the hand. Bone graft material, autologous, allogeneic, or synthetic, is packed into the void to restore the phalanx's normal contour and mechanical strength, supporting the pulp and nail bed structures that rely on adequate underlying bone for the pinch mechanism. Because the thumb contributes disproportionately to hand function relative to the other digits, restoring its skeletal integrity is often prioritized even when adjacent soft tissue reconstruction is also required. The graft is documented as the supplementing material distinct from any plate, screw, or wire fixation used concurrently.
Approach: Percutaneous
Percutaneous describes entry by needle or instrument puncture through the skin or mucous membrane to reach the site of the procedure, without cutting the tissue open or using a visualizing scope. It differs from Open in that the site itself is never exposed, and from Percutaneous Endoscopic in that no endoscope is used to see internal structures. Common examples include needle biopsies and injections.
Device: Nonautologous Tissue Substitute
Nonautologous Tissue Substitute refers to biologic material sourced from a donor or another species, such as an allograft or xenograft, used to replace a body part. It differs from Autologous Tissue Substitute by tissue origin outside the patient's own body, and from Synthetic Substitute by being biologic rather than manufactured material.
Coding & Documentation
Coders should confirm the operative note describes material being added to reinforce a structure that stays in place, not material substituting for a removed part. The device or graft type documented determines the correct device value - autograft, allograft, synthetic substitute, or nonautologous tissue - so vague documentation of "bone graft" without a source can complicate accurate coding. A common mistake is coding supplement when the surgeon actually performed a replacement, particularly in cranioplasty cases where it's unclear whether native bone was removed first. Another frequent error is missing a supplement code entirely when a graft was placed during a repair or reposition procedure, since it may require a separate code rather than being bundled in.